This ComPacT NSX250B is a complete 3P 3d fixed circuit breaker designed to optimize space and breaking capacity. It is an optimal choice for all standard and special applications. The breaking capacity (Icu) is 25 kA rms at 415 VAC, 50/60 Hz. The operating voltage is 690 VAC 50/60 Hz. This product features a thermal-magnetic trip device (TMD) rated at 250 A. The TMD trip device provides adjustable thermal overload protection and fixed magnetic protection. This 3-pole version (105 mm x 161 mm x 86 mm) comes with a wide range of optional features and accessories. It is compliant with international standards (IEC 60947), CCC, EAC and marine specifications. ComPacT NSX250B is part of Schneider Electric’s EcoStruxure Power architecture.